minutes ago police entered the sandy hook elementary school in newtown. a photo shows students being led out of school by adults. the report is the shooter is dead. other reports say the school principal may have been shot. >>> south carolina needs a new senator. the governor has chosen five possible candidates. she could make history by picking the first black or female senator. nancy cordes looks at one surprising name of the list the former first lady. >> jenny sanford's turn in the national spotlight began with the personal failing of her husband, governor mark sanford. >> i've been unfaithful to my wife. >> reporter: what made jenny sanford stand apart was that she did not stand by herman. at that press conference or in the days that followed as she was asked routinely about their future. >> his career right now is the least of my concerns. my important job right now is our children. >> reporter: sanford divorced her husband, wrote a memoir and spoke openly about her ordeal. she never showed an interest in entering politics herself which is why many